Year	Number of
1990	1328.08
1991	1368.39
1992	1411.94
1993	1458.78
1994	1509.72
1995	1565.36
1996	1616.78
1997	1672.57
1998	1733.72
1999	1796.2
2000	1859.91
2001	1912.14
2002	1966.19
2003	2030.65
2004	2099.84
2005	2175.68
2006	2218.92
2007	2265.81
2008	2322.23
2009	2382.35
2010	2446.35
2011	2538.86
2012	2636.51
2013	2737.67
2014	2845.4
2015	2960.65
2016	3080.18